When setting up a generic host on a device-tree based system, copy the
ats-supported flag into the pci_host_bridge structure.
Signed-off-by: Jean-Philippe Brucker <jean-philippe@xxxxxxxxxx>
---
v1->v2: keep the helper in pci-host-common.c
---
drivers/pci/controller/pci-host-common.c | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/drivers/pci/controller/pci-host-common.c b/drivers/pci/controller/pci-host-common.c
index 250a3fc80ec6..2e800bc6ae7a 100644
--- a/drivers/pci/controller/pci-host-common.c
+++ b/drivers/pci/controller/pci-host-common.c
@@ -54,6 +54,16 @@ static struct pci_config_window *gen_pci_init(struct device *dev,
return ERR_PTR(err);
}
+static void of_pci_host_check_ats(struct pci_host_bridge *bridge)
+{
+ struct device_node *np = bridge->bus->dev.of_node;
+
+ if (!np)
+ return;
+
+ bridge->ats_supported = of_property_read_bool(np, "ats-supported");
+}
+
int pci_host_common_probe(struct platform_device *pdev,
struct pci_ecam_ops *ops)
{
@@ -92,6 +102,7 @@ int pci_host_common_probe(struct platform_device *pdev,
return ret;
}
+ of_pci_host_check_ats(bridge);
platform_set_drvdata(pdev, bridge->bus);
return 0;
}
--
2.25.1
